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When Du Yan heard that Li Chongjiu had agreed to aid Zheng, he couldn't sit still at the moment, and said eagerly: "As long as King Zhao is willing to agree to aid Zheng, don't say that there are three conditions, that is, thirty, three hundred conditions, we can ...... It's negotiable. ”

Du Yan wanted to agree in one bite, but after thinking about it, he still said the word "consultation", but he was afraid that Li Chongjiu would open his mouth at the bottom of his heart, and said at the moment: "I Zheng Guo has returned to Luo, Luokou, Hanjia Sancang, I heard that Zhao Wang and Liu Heimin, if the military food is insufficient, you can withdraw it at any time." ”

Xue Wanshu said for a while, and said: "Huiluo, Luokou, Hanjia Sancang, our army also has Liyang Cang, and there is no shortage of military rations." ”

Du Yan was stunned for a moment and said: "I am too worried about this, King Zhao also asks for instructions, and I will fully cooperate." ”

Li Chongjiu smiled and said: "I'm afraid it's not easy, for example, the first one, if I want Lord Zheng to go to the emperor's number, do you say that Lord Zheng will agree or not?" ”

Du Yan's color changed after hearing this, and he stammered: "King Zhao, isn't this a joke?" ”

In order to call the emperor and seek to usurp the throne, Wang Shichong can be said to have planted all the infamy on his head, and the price of killing the emperor is not small. If you go to the emperor right now, isn't it a naked slap in the face of "ciluo"?

Bang!

Du Yan was taken aback, and Xue Wanche, the general of the Zhao Army on the side, slapped the table and said: "How can you laugh, the words of the king are worth laughing with you?" ”

Du Yan's face turned pale with fright.

Li Chongjiu waved his hand and said, "General Xue sit down." ”

Xue Wanche sat down after hearing this, but his eyes were staring at Du Yan. Li Chongjiu said: "A certain general under his command does not know the etiquette, please don't be surprised." ”

Seeing that Li Chongjiu was so polite, Du Yan hurriedly said: "King Zhao, where is it, this general is loyal to the king. It is understandable that as for the conditions, I said that they can be discussed, and then I will go back to the eastern capital and ask the Son of Heaven to consider it. Even if it is to go to the emperor's name, it is not non-negotiable. ”

Li Chongjiu laughed when he heard this. Zhang Xuansu and Xue Wanshu also pinched their beards and smiled. Li Chongjiu asked Wang Shichong to go to the emperor, but it was just a temporary temptation, Du Yanyan said that this can be discussed, it seems that Luoyang is not confident from top to bottom, thinking that the Tang army is invincible. Only by asking Zhao for help can Zheng Guo be spared.

Du Yan saw Li Chongjiu smiling, he didn't know what he meant, but he was up and down in his heart.

Li Chongjiu looked at Du Yanyan and said, "It's just a joke, you go back and ask Lord Zheng to rest assured, and tell him Li Tang Naizhao." Zheng Zhi's enemy, Li Tang attacked Zheng, Zhao State will never sit idly by, and when I break Liu Heimin, I will lead the army south to help, but when Liu Heimin is not broken, I also temporarily ask Zheng Zhu and Li Tang to temporarily deal with one or two. Don't be happy too early. There are still three conditions for orphan Zheng to help. ”

Du Yan almost burst into tears when he heard this, and said excitedly: "King Zhao can agree, I, Zheng Guo, am not grateful for King Zhao's great kindness, and King Zhao will also ask for instructions on the three conditions." ”

Li Chongjiu said: "Three conditions are actually one condition, before breaking Liu Heimin, Zhao Ruo aided Zheng, and Zheng needed to at least ensure that Huaizhou and Heyang were not lost." ”

Du Yan said: "This war has not started, and it is impossible to say that if the war situation is unfavorable to Zheng." Huaizhou is an enclave in Hebei, and if you want to keep it safe, I'm afraid it's a bit difficult. ”

Zhang Xuansu said: "Huaizhou is enough, but the three cities of Heyang are important land, and they should not be abandoned lightly." ”

Li Chongjiu saw Du Yan silently. Yan said: "If Huaizhou and Heyang are lost, then retreat to the second, then return to Luo, Luokou, Hanjia Sancang, the prince can not be lightly given to the Tang army, if it can't be held, at least one of them must be saved." ”

Du Yan was silent for a while, obviously a little at a loss.

Li Chongjiu stood up and said, "If this is not possible for the prince, then there is only one last one." ”

Du Yan also hurriedly stood up, followed by Li Chongjiu, and said, "King Zhao, please speak." ”

Li Chongjiu said: "If the facts of the war are unfavorable, it doesn't matter if Zheng Gong loses all the cities in Henan, but he must defend the tiger prison and ensure that it is not lost. ”

Hearing Li Chongjiu's last condition, Du Yan suddenly screamed and cried out.

Li Chongjiu looked at Du Yan and asked, "That's all I said, Du Shilang, please tell Lord Zheng that although the city of Luoyang is strong and heavily garrisoned, the lonely city cannot defend itself." ”

Since Li Yuan ordered the Eastern Expedition to Wang Shichong, the soldiers of the Tang Dynasty were conscripted and swept away as soldiers.

On the day of the expedition, Li Yuan personally sent Li Jiancheng, Li Shimin, and Li Yuanji to the Baling Pavilion, where the Tang Dynasty battle flag hunted and hunted eastward, and the Tang sergeant wore a battle jacket, hung a longbow on his waist, and grabbed a horizontal knife in his hand, and went to the east with a majestic spirit.

Seeing this scene, Li Yuan said happily: "The army is mighty, and the thieves are just around the corner. ”

Li Shimin and Li Yuanji all smiled. Li Yuan looked sad and said: "Although Wang Shichong is fierce, it is not difficult to deal with, and the only thing I have concerns about is Hebei. ”

Li Shimin heard the words and said: "My father's worry is none other than Li Chongjiu. ”

Li Yuan said solemnly: "There are indeed a few points. This thief has become a climate, Youyan Iron is riding in hand, and there are 100,000 soldiers, if he crosses the river to aid Zheng in a big way, I am worried that the matter of defeating Zheng will be a failure. ”

Li Shimin said: "Father doesn't have to worry, Li Chongjiu has the ambition to clear the **, Wang Shichong is so suspicious, and the emperor is in his body." The two must not be at harmony with each other. If the two families are united, they will also be guided by profit, and they will harbor ghosts with each other, and they will be at peace but not in harmony, but they will give their sons and daughters an opportunity. What's more, Li Chongjiu did not capture Zhaozhou on the first day, and he did not dare to go south on a large scale for one day. ”

Li Yuan said: "Wu'er has some truth. ”

Then Li Yuan and Li Shimin said a few more words, and after the three brothers said goodbye to Li Yuan, they each led their troops to leave.

Li Jiancheng and Li Jiancheng, Li Yuanji also parted ways here. Baling Pavilion is the intersection of Tongguan Road, Wuguan Road and Pujin Pass Road. Li Jiancheng directly led his men and horses to the north to take the Pujin Pass Road, crossed the Yellow River to Pujin to prepare for the Turks, while Li Shimin and Li Yuanji personally led 100,000 elite Guanzhong government troops to the east out of the Tongguan official road.

There is also a Wuguan Road, which goes to the south and leads to the Jiang and Han Dynasties, which was opened by Qin and Chu during the Warring States Period.

100,000 Guanzhong soldiers passed through Baqiao, traveled 60 miles a day, and went straight to Tongguan.

At that time, the Wei River was no longer passable, because the Wei River did not have enough water and there was a lot of shallow sand. Although it can be transported by water from Shaanzhou to Tongguan, it is very difficult to travel from Dantongguan to Chang'an, and Weishui can not even pass grain ships for a period of time, only floating bamboo and wooden rafts.

Therefore, in the fourth year of the emperor's reign, Yang Jian ordered Yu Wenkai to open the Guangtong Canal, which was more than 300 miles long from Tongguan to the Yellow River, and the grain could be passed from the Yellow River to Chang'an. However, it has been more than 20 years since the opening of the Guangtong Canal, because it is still using the sandy Weishui, and soon it fell into a silted situation, so the section from Tongguan to Chang'an has to be pulled by ox carts 6 times.

Li Shimin led a large army on Tongguan Avenue, and a Tongguan Road has also gone through countless ups and downs. The west of Guanzhong is known as the solidity of Cuihan, and only the official road of Tongguan is feasible. Although the Yellow River crosses the Cuihan, but because of the risk of the three pillars, the boat is not passable here, so Chang'an Luoyang, only the Tongguan official road is feasible.

Now the official road of Tongguan is crowded with soldiers from the east, and there is no business travel.

Fang Xuanling and Du Ruhui rode a donkey to accompany Li Shimin. The red horse that Li Shimin rode was a famous horse from Persia, and Li Shimin named it Shivachi.

Fang Xuanling saw that the Tang army was in the middle of the pass, so he had to carry dry food on his back and trek on the Tongguan Road, and couldn't help sighing: "Today's situation, the country stands according to the soldiers, the soldiers take food as their life, and food is based on Cao Yun. Luoyang is in Wang Shichong, the Yellow River is not passable, even the Guangtong Canal is also deserted, the boats and boats are unable to transport grain, and the tired soldiers have to win the grain and travel, which is really a big consumption. ”

Du Ru said that "the north and south of the transport, and is not easy, the Yellow River transport two major difficulties, one is the Wei River is difficult to transport, when Emperor Wu of the Han Dynasty established the capital of Chang'an, the annual Cao Mi Weishui can transport four million stones, Weishui can sail ten thousand stone ships, and to the great cause of the year, Weishui is only two or three hundred thousand stones per year, even if the Guangtong Canal is unobstructed when the east to Cao grain is only one million stones. The second is that the three gates have the risk of being a pillar, and the cao boat must be transported from Luokou to Shaanzhou by abandoning the boat6. During the opening of the emperor's reign, the Son of Heaven issued an edict to chisel the pillar, but in the end, it was not done. ”

Fang Xuanling listened to the words and said: "Therefore, Luoyang is not broken, and it is difficult to get rich in Guanzhong." After breaking the king's reign, the Yellow River was reopened. Now the grain price in Chang'an remains high, and this time the eastward expedition to Henan can only support one month with grain and rice reserves. ”

Li Shimin laughed and said: "Therefore, if we want to break Wang Shichong, the only way to do it is to feed the enemy." The six official warehouses in the world, Wang Shichong lived in Luokou, returned to Luo, including Jia Sancang, accumulated the millet of the north and south, and the eastern capital of the city. Any warehouse we break is enough to supply the military rations of the Eastern Expeditionary Army. ”

Fang Xuanling said: "King Qin, this attack on Zheng, you can follow suit from the perspective of humble duties, and Zhao broke Liu Heimin's example. ”

Li Shimin asked: "How to say it, I listen to it." ”

Fang Xuanling said: "Zhao Guo broke Liu Heimin this time, but in two months, he went down to several counties in Hebei, which was really unexpected by Weichen. In the opinion of Weichen, in addition to the courage of the soldiers and horses, and the undecided hearts of Liu Heimin, there are three reasons for Zhao Jun's victory. ”

Du Ruhui urged: "Brother Fang, don't sell Guanzi." ”

Li Shimin also smiled, and Fang Xuanling said solemnly: "First, by taking advantage of the Yongji Canal, Li Chongjiu took it lightly by water, bypassing Gaoyang City, which was heavily guarded by the Xia army, and along the canal, all the counties in Hebei were invincible. ”

"Second, Li Chongjiu seized the Liyang warehouse from Yu Culture and his hands, and used the grain and rice in the Liyang warehouse to continuously supply the hundreds of thousands of troops in the southern expedition, otherwise with the storage of Zhao ** grain, the army food would have been exhausted in less than October."

"Three to Li Chongjiu Xing's strategy of attacking together, the main force is close to the Daimyo, forcing Liu Heimin not to leave lightly, and Wei Chigong, Xu Shiji, Guo Xiaoke three people, divided and then combined attack, after the battle and success, the army surrounded Zhouzhou. These three reasons can be used as a reference for our Tang Dynasty's attack on Zheng Guo. ”

Li Shimin listened to Fang Xuanling's words, and said with a bright eye: "Mr. Fang's words are very pertinent. Nothing is gained. ”